Angles in a triangle must add up to 180°, however, the angles for option C add up to more than 180°.
So the correct answer is option C.m<d = 100, m<E=50 ,m<F=30.
What is the triangle formula?
The basic formula for the area of a triangle is equal to half the product of its base and height, i.e., A = 1/2 × b × h. This formula is applicable to all types of triangles, whether it is a scalene triangle, an isosceles triangle, or an equilateral triangle.
What are the rules of triangles?
Properties of Triangle: Summary & Key Takeaways-
- The sum of all interior angles of any triangle is equal to 180°
- The sum of all exterior angles of any triangle is equal to 360°
- An exterior angle of a triangle is equal to the sum of its two interior opposite angles.
Learn more about the triangle formula here: https://brainly.com/question/2217700
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